Main aim of the article is to analyze the image of Nestorians as presented in several medieval European travel accounts about Asia (William of Rubruck, John Plano of Carpini, Odoric of Pordenone, Giovanni Marignolla, Marco Polo). Nestorians were depicted as ‘the worst heretics’, often considered to be worse in their morals than the ‘pagans’. Strongly negative attitude of the authors towards Nestorians can be ascribed to certain rivalry between Latin Christian and Nestorians. However, it seems that negative associations were closely connected to the existing European idea about ‘Nestorianism’ as a heresy, rather than to factual differences between Latin and other Christians.